prosody
02e97e716675
plugins/mod_pep.lua

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plugins/mod_pep.lua @ 1428:02e97e716675

mod_pep: Added function get_caps_hash_from_presence
author Waqas Hussain <waqas20@gmail.com>
date Fri, 26 Jun 2009 23:36:12 +0500
parent 1425:8187f72b7425
child 1429:51cfb152cb38
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 local jid_bare = require "util.jid".bare;
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3 local jid_split = require "util.jid".split;
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4 local st = require "util.stanza";
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5 local hosts = hosts;
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6 local user_exists = require "core.usermanager".user_exists;
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7 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
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8 local pairs, ipairs = pairs, ipairs;
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9 local next = next;
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10 local load_roster = require "core.rostermanager".load_roster;
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12 local data = {};
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13 local recipients = {};
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14
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15 module:add_identity("pubsub", "pep");
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16 module:add_feature("http://jabber.org/protocol/pubsub#publish");
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17
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18 local function publish(session, node, item)
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19 local disable = #item.tags ~= 1 or #item.tags[1].tags == 0;
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20 local bare = session.username..'@'..session.host;
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21 local stanza = st.message({from=bare, type='headline'})
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22 :tag('event', {xmlns='http://jabber.org/protocol/pubsub#event'})
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23 :tag('items', {node=node})
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24 :add_child(item)
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25 :up()
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26 :up();
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27
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28 -- store for the future
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29 local user_data = data[bare];
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30 if disable then
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31 if user_data then user_data[node] = nil; end
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32 if not next(user_data) then data[bare] = nil; end
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33 else
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34 if not user_data then user_data = {}; data[bare] = user_data; end
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35 user_data[node] = stanza;
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36 end
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37
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38 -- broadcast to resources
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39 stanza.attr.to = bare;
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40 core_route_stanza(session, stanza);
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41
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42 -- broadcast to contacts
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43 for jid, item in pairs(session.roster) do
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44 if jid and jid ~= "pending" and (item.subscription == 'from' or item.subscription == 'both') then
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45 stanza.attr.to = jid;
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46 core_route_stanza(session, stanza);
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47 end
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48 end
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49 end
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50
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51 local function get_caps_hash_from_presence(stanza, current)
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52 if not stanza.attr.type then
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53 for _, child in pairs(stanza.tags) do
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54 if child.name == "c" and child.attr.xmlns == "http://jabber.org/protocol/caps" then
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55 local attr = child.attr;
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56 if attr.hash then -- new caps
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57 if attr.hash == 'sha-1' and attr.node and attr.ver then return attr.ver, attr.node.."#"..attr.ver; end
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58 else -- legacy caps
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59 if attr.node and attr.ver then return attr.node.."#"..attr.ver.."#"..(attr.ext or ""), attr.node.."#"..attr.ver; end
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60 end
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61 return; -- bad caps format
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62 end
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63 end
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64 return current; -- no caps, could mean caps optimization, so return current
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65 end
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66 end
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67
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68 module:hook("presence/bare", function(event)
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69 -- inbound presence to bare JID recieved
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70 local origin, stanza = event.origin, event.stanza;
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71
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72 local user = stanza.attr.to or (origin.username..'@'..origin.host);
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73 local bare = jid_bare(stanza.attr.from);
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74 local item = load_roster(jid_split(user))[bare];
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75 if not stanza.attr.to or (item and (item.subscription == 'from' or item.subscription == 'both')) then
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76 local t = stanza.attr.type;
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77 local recipient = stanza.attr.from;
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78 if t == "unavailable" or t == "error" then
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79 if recipients[user] then recipients[user][recipient] = nil; end
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80 elseif not t then
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81 recipients[user] = recipients[user] or {};
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82 if not recipients[user][recipient] then
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83 recipients[user][recipient] = true;
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84 for node, message in pairs(data[user] or {}) do
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85 message.attr.to = stanza.attr.from;
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86 origin.send(message);
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87 end
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88 end
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89 end
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90 end
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91 end, 10);
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92
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93 module:hook("iq/bare/http://jabber.org/protocol/pubsub:pubsub", function(event)
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94 local session, stanza = event.origin, event.stanza;
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95 if stanza.attr.type == 'set' and (not stanza.attr.to or jid_bare(stanza.attr.from) == stanza.attr.to) then
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96 local payload = stanza.tags[1];
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97 if payload.name == 'pubsub' then -- <pubsub xmlns='http://jabber.org/protocol/pubsub'>
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98 payload = payload.tags[1];
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99 if payload and payload.name == 'publish' and payload.attr.node then -- <publish node='http://jabber.org/protocol/tune'>
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100 local node = payload.attr.node;
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101 payload = payload.tags[1];
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102 if payload then -- <item>
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103 publish(session, node, payload);
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104 return true;
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105 end
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106 end
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107 end
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108 end
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109 end);
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110
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111 module:hook("iq/bare/disco", function(event)
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112 local session, stanza = event.origin, event.stanza;
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113 if stanza.attr.type == "result" then
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114 local disco = stanza.tags[1];
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115 if disco and disco.name == "query" and disco.attr.xmlns == "http://jabber.org/protocol/disco#info" then
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116 -- Process disco response
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117 -- TODO check if waiting for recipient's response
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118 local hash; -- TODO calculate hash
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119 -- TODO update hash map
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120 -- TODO set recipient's data to calculated data
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121 end
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122 end
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123 end);